1 files changed, 98 insertions, 0 deletions
diff --git a/dom/manifest/test/test_window_onappinstalled_event.html b/dom/manifest/test/test_window_onappinstalled_event.html
new file mode 100644
index 000000000..af57fbf77
--- /dev/null
+++ b/dom/manifest/test/test_window_onappinstalled_event.html
@@ -0,0 +1,98 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1265279
+-->
+
+<head>
+  <meta charset="utf-8">
+  <title>Test for Bug 1309099 - Web Manifest: Implement window.onappinstalled</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
+  <script>
+  "use strict";
+  SimpleTest.waitForExplicitFinish();
+  const finish = SimpleTest.finish.bind(SimpleTest);
+  enableOnAppInstalledPref()
+    .then(createIframe)
+    .then(checkImplementation)
+    .then(checkOnappInstalledEventFired)
+    .then(checkAddEventListenerFires)
+    .then(finish)
+    .catch(err => {
+      ok(false, err.stack);
+      finish();
+    });
+
+  function enableOnAppInstalledPref() {
+    const ops = {
+      "set": [
+        ["dom.manifest.onappinstalled", true],
+      ],
+    };
+    return SpecialPowers.pushPrefEnv(ops);
+  }
+
+  // WebIDL conditional annotations for an interface are evaluate once per
+  // global, so we need to create an iframe to see the effects of calling
+  // enableOnAppInstalledPref().
+  function createIframe() {
+    return new Promise((resolve) => {
+      const iframe = document.createElement("iframe");
+      iframe.src = "about:blank";
+      iframe.onload = () => resolve(iframe.contentWindow);
+      document.body.appendChild(iframe);
+    });
+  }
+
+  // Check that the WebIDL is as expected.
+  function checkImplementation(ifrWindow) {
+    return new Promise((resolve, reject) => {
+      const hasOnAppInstalledProp = ifrWindow.hasOwnProperty("onappinstalled");
+      ok(hasOnAppInstalledProp, "window has own onappinstalled property");
+
+      // no point in continuing
+      if (!hasOnAppInstalledProp) {
+        const err = new Error("No 'onappinstalled' IDL attribute. Aborting early.");
+        return reject(err);
+      }
+      is(ifrWindow.onappinstalled, null, "window install is initially set to null");
+
+      // Check that enumerable, configurable, and has a getter and setter.
+      const objDescriptor = Object.getOwnPropertyDescriptor(ifrWindow, "onappinstalled");
+      ok(objDescriptor.enumerable, "is enumerable");
+      ok(objDescriptor.configurable, "is configurable");
+      ok(objDescriptor.hasOwnProperty("get"), "has getter");
+      ok(objDescriptor.hasOwnProperty("set"), "has setter");
+      resolve(ifrWindow);
+    });
+  }
+
+  // Checks that .onappinstalled receives an event.
+  function checkOnappInstalledEventFired(ifrWindow) {
+    const customEv = new CustomEvent("appinstalled");
+    return new Promise((resolve) => {
+      // Test is we receive the event on `appinstalled`
+      ifrWindow.onappinstalled = ev => {
+        ifrWindow.onappinstalled = null;
+        is(ev, customEv, "The events should be the same event object");
+        resolve(ifrWindow);
+      };
+      ifrWindow.dispatchEvent(customEv);
+    });
+  }
+
+  // Checks that .addEventListener("appinstalled") receives an event.
+  function checkAddEventListenerFires(ifrWindow) {
+    const customEv = new CustomEvent("appinstalled");
+    return new Promise((resolve) => {
+      ifrWindow.addEventListener("appinstalled", function handler(ev) {
+        ifrWindow.removeEventListener("appinstalled", handler);
+        is(ev, customEv, "The events should be the same");
+        resolve(ifrWindow);
+      });
+      ifrWindow.dispatchEvent(customEv);
+    });
+  }
+  </script>
+</head>